Fenian: A word originally used to describe an Irish Warrior. However, it is now mainly used as a derogatory slang term to offend Catholics living in Northern Ireland. The word is used by the Protestant community in Northern Ireland mainly, however it is also common in the Protestant community of Scotland. The word is the Celtic word that was used to describe Warriors in Ireland and farmers.

Protestant: You're are a dirty little Fenian bastard!
Catholic: Thank you very much for calling me a warrior sir.

The Fenians were members of the Irish Republican Brotherhood (IRB) in Ireland in the 1860s. They are essentially the pioneers of modern terrorism, and used violent methods in order to gain what they wanted - in this case they wanted Ireland to be made a Republic, separate from Britain and with their own Parliament.

Derogatory term used to offend Roman Catholics.Normally used by protestants whom do not know enough about their own history to make a fair judgement . They will say that Catholics are smelly , ugly etc.They will blame them for he IRA etc terrorist groups .The IRA fought for Irish republicans against the British army who treated them as second class citizens merely because they are of a different faith. If you look close enough the faiths are practically the same the only main differences are that Catholics believe more of the books of the bible. All in all it was the British armies fault.If they had not attacked the republic of Ireland the IRA etc would not have started therefore no 600 year war resulting in thousands of deaths.

The term originated in the US (1860s) and refers to the members of the American branch/chapter of the Irish Republican Brotherhood founded in Ireland. For Irish-Americans, the term signifies respect, loyalty and love for ones heritage. It is the highest honor for an Irish-American to be referred to as a Fenian or a “Fenian Son”.